diff -uNr nim-1.2.0/lib/pure/osproc.nim nim-1.2.0.mod/lib/pure/osproc.nim
--- nim-1.2.0/lib/pure/osproc.nim	2020-04-03 15:47:18.000000000 +0300
+++ nim-1.2.0.mod/lib/pure/osproc.nim	2020-04-05 21:02:38.903445889 +0300
@@ -852,7 +852,7 @@
     if poEvalCommand in options:
       const useShPath {.strdefine.} =
         when not defined(android): "/bin/sh"
-        else: "/system/bin/sh"
+        else: "@TERMUX_PREFIX@/bin/sh"
       data.sysCommand = useShPath
       sysArgsRaw = @[data.sysCommand, "-c", command]
       assert args.len == 0, "`args` has to be empty when using poEvalCommand."